Table 3. Pathological data of 358 patients who underwent D1+/D2 radical gastrectomy.

Parameter		All patients (358 patients)	POPF (20 patients)	No POPF (338 patients)	P-value
Macroscopic type					0.484*
	Mass (type 1)	39 (10.9)	1 (5.0)	38 (11.2)
	Ulcerative (type 2)	118 (33.0)	9 (45.0)	109 (32.2)
	Infiltrative-ulcerative (type 3)	171 (47.8)	9 (45.0)	162 (47.9)
	Diffuse-infiltrative (type 4)	27 (7.5)	0 (0.0)	27 (8.0)
	NA	2 (0.8)	1 (5.0)	1 (0.7)
Tumor diameter (cm)		5.6±3.2	6.3±4.5	5.6±3.1	0.649†
Adenocarcinoma		311 (86.9)	18 (90.0)	293 (86.7)	1*
Lymphoma		28 (7.8)	1 (5.0)	27 (8.0)	1*
Grade of differentiation					1*
	G1	85 (23.7)	4 (20.0)	81 (24.0)
	G2	95 (26.5)	8 (40.0)	87 (25.7)
	G3	124 (34.6)	4 (20.0)	120 (35.5)
	NA	54 (15.2)	4 (20.0)	50 (14.8)
T stage					1*
	T1	20 (5.6)	1 (5.0)	19 (5.6)
	T2	70 (19.6)	4 (20.0)	66 (19.5)
	T3	162 (45.3)	7 (35.0)	155 (45.9)
	T4	82 (22.9)	6 (30.0)	76 (22.5)
	NA	24 (6.6)	2 (10.0)	22 (6.5)
Positive lymph nodes		224 (62.6)	15 (75.0)	209 (61.8)	0.337*
No. of harvested lymph nodes		25±12	24.6±12	25.2±12	0.967†
TNM stage					0.090*
	Stage IA	16 (4.5)	1 (5.0)	15 (4.4)
	Stage IB	41 (11.5)	2 (10.0)	39 (11.5)
	Stage IIA	65 (18.2)	1 (5.0)	64 (18.9)
	Stage IIB	59 (16.5)	2 (10.0)	57 (16.9)
	Stage IIIA	54 (15.1)	5 (25.0)	49 (14.5)
	Stage IIIB	59 (16.5)	2 (10.0)	57 (16.9)
	Stage IIIC	38 (10.6)	5 (25.0)	33 (9.8)
	Stage IV	5 (1.4)	0 (0.0)	5 (1.5)
	NA	21 (5.7)	2 (10.0)	19 (5.6)
Negative resection margins		317 (88.5)	16 (80.0)	301 (89.0)	0.266*

Data are shown as mean±standard deviation or number (%).

POPF = postoperative pancreatic fistula, NA = not applicable.

^*Fisher's exact test (2-tailed); ^†Mann-Whitney U test (2-tailed).